ENTRY C0500 20161203 C164C050000000001 SUBENT C0500001 20161203 C164C050000100001 BIB 8 30 C050000100002 TITLE A kinematically complete, interdisciplinary, and C050000100003 constitutional measurement of the 19F(a,n) cross C050000100004 section for nuclear safeguards science C050000100005 AUTHOR (W.A.Peters, M.S.Smith, S.Pittman, S.J.Thompson, C050000100006 R.R.C.Clement, J.A.Cizewski, S.D.Pain, M.Febbraro, C050000100007 K.A.Chipps, S.Burcher, B.Manning, C.Reingold, C050000100008 R.Avetisyan, A.Battaglia, Y.Chen, A.Long, S.Lyons, C050000100009 S.T.Marley, C.Seymour, K.T.Siegl, M.K.Smith, C050000100010 S.Strauss, R.Talwar, D.W.Bardayan, A.Gyurjinyan, C050000100011 K.Smith, C.Thornsberry, P.Thompson, M.Madurga, C050000100012 E.Stech, W.-P.Tan, M.Wiescher, S.Ilyushkin, Z.Tully, C050000100013 M.M.Grinder) C050000100014 INSTITUTE (1USAORL,1USAINL,1USARUT,1USANOT,1USAMHG,1USATEN, C050000100015 1USACSM,1USATTU) C050000100016 (1USAUSA) U.S. Air Force C050000100017 REFERENCE (R,INL/EXT-16-38791,2016) C050000100018 METHOD (TOF) C050000100019 DETECTOR (SCIN) Versatile Array of Neutron Detectors at Low C050000100020 Energy (VANDLE) which consisted of scintillators C050000100021 BC-408 (EJ-200 plastic) of 60 cm (long) x 3 cm (wide)C050000100022 x 3 cm (deep). C050000100023 The intrinsic neutron detection efficiency of VANDLE C050000100024 was determined by a separate measurement of 27Al(d,n)C050000100025 reaction with a 252Cf source at Ohio Univ. C050000100026 In the alpha-beam experiment, the detection system C050000100027 covers 227 msr (21-170 deg at beam right side and C050000100028 75-150 deg at beam left side) in the alpha-beam C050000100029 experiment. C050000100030 STATUS (TABLE) Tables 10+11 of INL/EXT-16-38791 C050000100031 HISTORY (20161203C) On C050000100032 ENDBIB 30 0 C050000100033 NOCOMMON 0 0 C050000100034 ENDSUBENT 33 0 C050000199999 SUBENT C0500002 20161203 C164C050000200001 BIB 9 32 C050000200002 REACTION (9-F-19(A,N)11-NA-22,,SIG) C050000200003 FACILITY (VDGT,1USANOT) alpha-beam experiment C050000200004 SAMPLE 49 nm (29 ug/cm2) thick LaF3 evaporated onto 84 nm C050000200005 (50 ug/cm2) thick Au. The energy thickness is ~12 keV.C050000200006 Target thickness (to 2%), stoichiometry and purity C050000200007 were analyzed by Rutherford back scattering (RBS). C050000200008 METHOD (BCINT) C050000200009 ANALYSIS Neutron yield was predicted by MCNP6 and the C050000200010 experimental cross section was determined by C050000200011 least-squares fit to minimize the difference between C050000200012 the predicted and measured angular distribution of C050000200013 neutron yields for each 24Na level. C050000200014 This procedure was necessary because the detection C050000200015 system not detect neutrons below its detection C050000200016 threshold (~500 keV) and also emitted at angles not C050000200017 subtended by the system. C050000200018 COMMENT EN: Effective laboratory energy of alpha particle in C050000200019 the centre of the target C050000200020 EN-RSL: Full energy loss of the beam in the target C050000200021 MISC-COL (MISC) Cross section added to account for populated C050000200022 22Na levels with neutrons below the detection C050000200023 threshold C050000200024 STATUS (COREL,C0500003) Data set from 19F-beam experiment C050000200025 ERR-ANALYS (ERR-T) Total uncertainty C050000200026 (MISC-ERR) Sub-threshold partial cross section (0-6%)C050000200027 (ERR-2) Fitting of measured angular dependent yield C050000200028 to the predicted angular dependent yield C050000200029 simulated by MCNP (1-13%)C050000200030 (ERR-1) Beam integration module failure (<7%)C050000200031 (ERR-3) VANDLE detection efficiency (4%)C050000200032 (ERR-4) MCNP simulations (4%)C050000200033 (ERR-5) Target thickness (2%)C050000200034 ENDBIB 32 0 C050000200035 COMMON 3 3 C050000200036 ERR-3 ERR-4 ERR-5 C050000200037 PER-CENT PER-CENT PER-CENT C050000200038 4. 4. 2. C050000200039 ENDCOMMON 3 0 C050000200040 DATA 11 107 C050000200041 EN EN-ERR EN-RSL DATA -ERR-T +ERR-T C050000200042 -ERR-2 +ERR-2 MISC MISC-ERR ERR-1 C050000200043 MEV MEV MEV MB MB MB C050000200044 MB MB MB MB MB C050000200045 3.92 0.017 0.0135 30.9 2.7 2.7C050000200046 2. 2. C050000200047 3.95 0.017 0.013 45.4 3.1 3.1C050000200048 1.6 1.6 C050000200049 3.96 0.017 0.013 53.8 3.7 3.7C050000200050 1.8 1.8 C050000200051 3.99 0.017 0.013 67. 4.2 4.2C050000200052 1.2 1.2 C050000200053 4.01 0.017 0.013 47.5 3.1 3.1C050000200054 1.1 1.1 C050000200055 4.04 0.017 0.013 53.6 3.5 3.5C050000200056 1.4 1.4 C050000200057 4.07 0.017 0.013 63. 4.5 4.5C050000200058 2.5 2.5 C050000200059 4.09 0.017 0.013 78.6 5.4 5.4C050000200060 2.7 2.7 C050000200061 4.11 0.017 0.013 49.5 4.6 4.6C050000200062 3.5 3.5 C050000200063 4.14 0.017 0.013 42.7 4.7 4.7C050000200064 3.9 3.9 C050000200065 4.143 0.005 0.013 33.2 5.4 5.4C050000200066 5. 5. C050000200067 4.17 0.017 0.013 50.7 3.6 3.6C050000200068 1.9 1.9 C050000200069 4.19 0.017 0.013 39.4 3.4 3.4C050000200070 2.5 2.5 C050000200071 4.22 0.017 0.0125 86. 5.8 5.8C050000200072 2.6 2.6 C050000200073 4.24 0.017 0.0125 93.1 5.7 5.7C050000200074 1.2 1.2 C050000200075 4.27 0.017 0.0125 105.7 7.3 7.3C050000200076 3.5 3.5 C050000200077 4.29 0.017 0.0125 82.5 5.8 5.8C050000200078 3.1 3.1 C050000200079 4.316 0.005 0.0125 104.1 6.6 6.6C050000200080 2. 2. C050000200081 4.32 0.017 0.0125 96.9 6. 6.C050000200082 1.5 1.5 C050000200083 4.34 0.017 0.0125 64.9 5.3 5.3C050000200084 3.7 3.7 C050000200085 4.37 0.017 0.0125 57.1 5.8 5.8C050000200086 4.7 4.7 C050000200087 4.39 0.017 0.0125 55.1 4.7 4.7C050000200088 3.3 3.3 C050000200089 4.42 0.017 0.0125 56.6 4.1 4.1C050000200090 2.4 2.4 C050000200091 4.44 0.017 0.0125 72.6 5.1 5.1C050000200092 2.7 2.7 C050000200093 4.47 0.017 0.0125 137.3 13.2 13.2C050000200094 10.3 10.3 C050000200095 4.49 0.017 0.0125 137.7 8.8 8.8C050000200096 3. 3. C050000200097 4.51 0.017 0.012 104.5 11.6 11.6C050000200098 3.7 3.7 25. 6. C050000200099 4.57 0.017 0.012 170.1 12.9 12.9C050000200100 1.9 1.9 51. 6. C050000200101 4.604 0.005 0.012 143.8 14.1 14.1C050000200102 5.2 5.2 51. 6. C050000200103 4.626 0.005 0.012 176.5 15.9 15.9C050000200104 4.4 4.4 51. 6. 5.7 C050000200105 4.634 0.005 0.012 182. 14. 14.C050000200106 2.7 2.7 51. 6. C050000200107 4.644 0.005 0.012 167. 14.4 14.4C050000200108 4.3 4.3 51. 6. C050000200109 4.654 0.005 0.012 153.5 14.9 14.9C050000200110 5.7 5.7 51. 6. C050000200111 4.66 0.017 0.012 187.9 12.4 12.4C050000200112 5.1 5.1 C050000200113 4.663 0.005 0.012 149.9 9.4 9.4C050000200114 2.6 2.6 C050000200115 4.67 0.017 0.012 181.3 12.5 12.5C050000200116 6.2 6.2 C050000200117 4.681 0.005 0.012 174.9 17.8 17.8C050000200118 7.1 7.1 12.5 C050000200119 4.686 0.005 0.012 192.4 12.3 12.3C050000200120 3.7 3.7 C050000200121 4.706 0.005 0.012 173.2 15.9 15.9C050000200122 6.4 6.4 10.2 C050000200123 4.71 0.017 0.012 171.8 11.1 11.1C050000200124 3.8 3.8 C050000200125 4.731 0.005 0.012 119.4 12.4 12.4C050000200126 7.6 7.6 6.6 C050000200127 4.756 0.005 0.012 164.1 15.2 15.2C050000200128 3.7 3.7 10.9 C050000200129 4.76 0.017 0.012 66. 5.1 5.1C050000200130 3.2 3.2 C050000200131 4.769 0.005 0.012 71.3 9.1 9.1C050000200132 3.8 3.8 7.1 C050000200133 4.78 0.017 0.012 75. 5. 5.C050000200134 2.2 2.2 C050000200135 4.791 0.005 0.012 62.5 5.9 5.9C050000200136 3.4 3.4 3.1 C050000200137 4.81 0.017 0.012 94.1 8.5 8.5C050000200138 6.3 6.3 C050000200139 4.87 0.017 0.0115 87.1 5.6 5.6C050000200140 2.1 2.1 C050000200141 4.88 0.017 0.0115 88.4 5.6 5.6C050000200142 1.9 1.9 C050000200143 4.92 0.017 0.0115 106.5 15.1 15.1C050000200144 13.7 13.7 C050000200145 4.99 0.017 0.0115 125.2 12.3 12.3C050000200146 3.7 3.7 14. 6. C050000200147 4.994 0.005 0.0115 132.6 11.5 11.5C050000200148 2.2 2.2 14. 6. C050000200149 5.019 0.005 0.0115 127.3 11.2 11.2C050000200150 2.2 2.2 28. 6. C050000200151 5.02 0.017 0.0115 137.2 11.6 11.6C050000200152 2.1 2.1 28. 6. C050000200153 5.14 0.017 0.0115 135.5 10.2 10.2C050000200154 6.2 6.2 C050000200155 5.169 0.005 0.0115 126.1 10.5 10.5C050000200156 2.9 2.9 C050000200157 5.23 0.017 0.011 124.1 11.2 11.2C050000200158 8.4 8.4 C050000200159 5.294 0.005 0.011 251.4 18. 18.C050000200160 5.9 5.9 25. 4. C050000200161 5.319 0.005 0.011 296.1 20. 20.C050000200162 5.1 5.1 25. 4. C050000200163 5.344 0.005 0.011 201.4 14.4 14.4C050000200164 3.9 3.9 25. 4. C050000200165 5.361 0.005 0.011 208.5 15.1 15.1C050000200166 4.4 4.4 25. 4. C050000200167 5.392 0.005 0.011 241.4 16.1 16.1C050000200168 3. 3. 25. 4. C050000200169 5.419 0.005 0.011 226.6 15.3 15.3C050000200170 2.9 2.9 25. 4. C050000200171 5.445 0.005 0.011 197.4 15.8 15.8C050000200172 5.7 5.7 25. 4. C050000200173 5.47 0.005 0.011 198.4 12.6 12.6C050000200174 4.1 4.1 C050000200175 5.495 0.005 0.011 187.3 11.6 11.6C050000200176 2.8 2.8 C050000200177 5.519 0.005 0.011 178. 13.3 13.3C050000200178 7.9 7.9 C050000200179 5.544 0.005 0.011 201.2 12.9 12.9C050000200180 4.6 4.6 C050000200181 5.57 0.005 0.011 232.7 14.2 14.2C050000200182 2.6 2.6 C050000200183 5.594 0.005 0.011 261. 15.9 15.9C050000200184 2.8 2.8 C050000200185 5.644 0.005 0.011 143.2 11.5 11.5C050000200186 7.6 7.6 C050000200187 5.669 0.005 0.011 93.7 10.7 10.7C050000200188 9.1 9.1 C050000200189 5.694 0.005 0.011 168.9 10.8 10.8C050000200190 3.6 3.6 C050000200191 5.72 0.005 0.0105 212.6 13.1 13.1C050000200192 3. 3. C050000200193 5.745 0.005 0.0105 181.9 11.3 11.3C050000200194 2.8 2.8 C050000200195 5.797 0.005 0.0105 235.3 15.8 15.8C050000200196 3. 3. 20. 4. C050000200197 5.82 0.005 0.0105 279.5 18.4 18.4C050000200198 3.5 3.5 41. 4. C050000200199 5.845 0.005 0.0105 329.4 21. 21.C050000200200 3. 3. 41. 4. C050000200201 5.87 0.005 0.0105 308.4 19.7 19.7C050000200202 2.8 2.8 41. 4. C050000200203 5.895 0.005 0.0105 258.1 17.6 17.6C050000200204 4.3 4.3 41. 4. C050000200205 5.92 0.005 0.0105 236.2 16.5 16.5C050000200206 4.5 4.5 41. 4. C050000200207 5.945 0.005 0.0105 268.9 18. 18.C050000200208 4. 4. 41. 4. C050000200209 5.97 0.005 0.0105 343.7 22.5 22.5C050000200210 9. 9. C050000200211 5.995 0.005 0.0105 329.7 21.1 21.1C050000200212 7.3 7.3 C050000200213 6.02 0.005 0.0105 303. 19.6 19.6C050000200214 7.2 7.2 C050000200215 6.045 0.005 0.0105 252. 16.7 16.7C050000200216 7. 7. C050000200217 6.07 0.005 0.0105 276.1 18.5 18.5C050000200218 8.2 8.2 C050000200219 6.095 0.005 0.0105 325.9 21.9 21.9C050000200220 9.9 9.9 C050000200221 6.119 0.005 0.0105 341.4 22.7 22.7C050000200222 9.8 9.8 C050000200223 6.145 0.005 0.0105 408.4 26.9 26.9C050000200224 11.1 11.1 C050000200225 6.17 0.005 0.0105 439.5 27.7 27.7C050000200226 8.6 8.6 C050000200227 6.195 0.005 0.0105 362.3 25.2 25.2C050000200228 8.6 8.6 16. 4. C050000200229 6.222 0.005 0.01 294.4 21.3 21.3C050000200230 7.9 7.9 16. 4. C050000200231 6.245 0.005 0.01 283.3 19.2 19.2C050000200232 5. 5. 16. 4. C050000200233 6.27 0.005 0.01 300.4 19.8 19.8C050000200234 4.1 4.1 16. 4. C050000200235 6.295 0.005 0.01 318.2 20.6 20.6C050000200236 3.8 3.8 16. 4. C050000200237 6.32 0.005 0.01 332.6 22.3 22.3C050000200238 6. 6. 16. 4. C050000200239 6.345 0.005 0.01 372.5 24.4 24.4C050000200240 9.8 9.8 C050000200241 6.37 0.005 0.01 307.6 18.7 18.7C050000200242 3. 3. C050000200243 6.395 0.005 0.01 303.6 20. 20.C050000200244 6.7 6.7 C050000200245 6.42 0.005 0.01 384.4 26.8 26.8C050000200246 13.7 13.7 C050000200247 6.445 0.005 0.01 372.7 24.2 24.2C050000200248 9.3 9.3 C050000200249 6.47 0.005 0.01 336.2 21.4 21.4C050000200250 7.2 7.2 C050000200251 6.495 0.005 0.01 264.9 16.7 16.7C050000200252 5.1 5.1 C050000200253 6.52 0.005 0.01 269.1 16.9 16.9C050000200254 4.9 4.9 C050000200255 6.645 0.005 0.01 267.5 18. 18.C050000200256 8.2 8.2 C050000200257 6.67 0.005 0.01 338.2 22.2 22.2C050000200258 8.9 8.9 C050000200259 ENDDATA 218 0 C050000200260 ENDSUBENT 259 0 C050000299999 SUBENT C0500003 20161203 C164C050000300001 BIB 9 36 C050000300002 REACTION (9-F-19(A,N)11-NA-22,,SIG) C050000300003 FACILITY (VDGT,1USAORL) 19F-beam experiemnt C050000300004 SAMPLE 4He gas (4000+/-5 mTorr, corresponding to energy C050000300005 thickness of 5 keV and areal density of 2.6 ug/cm2) C050000300006 in a windowless recirculating gas target system. C050000300007 METHOD Beam current was determined by detection of C050000300008 elastically scattered recoil alphas at 45 deg C050000300009 during 4He(19F,n) measurement. C050000300010 A separate experiment was performed to determine C050000300011 elastic scattering alpha yield per Coulomb. C050000300012 ANALYSIS 22Na gated neutron yields/Coulomb was normalized to C050000300013 22Na yields/Coulomb by scaling factors determined at C050000300014 four alpha energy ranges, and 22Na gated neutron C050000300015 yields/Coulomb and 22Na yields/Coulomb were combined. C050000300016 The combined yields (relative cross sections) were C050000300017 further normalized to the absolute cross sections C050000300018 from the alpha-beam experiment. C050000300019 DETECTOR (SI) Si detector (28 cm from the target gas) at 45 deg C050000300020 for alpha detection. C050000300021 (MAGSP,IOCH) Daresbury Recoil Separator at 0 deg for C050000300022 22Na detection with angular acceptance of +/-2.6 deg C050000300023 which is not sufficient to cover the opening angle of C050000300024 22Na recoils (4 deg). C050000300025 COMMENT EN: Effective laboratory energy of alpha particle in C050000300026 the centre of the target corresponding to the same C050000300027 center of mass energy as the laboratory energy of the C050000300028 fluorine beam C050000300029 EN-RSL: Full energy loss of the beam in the target C050000300030 ERR-ANALYS (ERR-T) Total uncertainty C050000300031 (ERR-2) Fitting of measured angular dependent yield to C050000300032 the predicted angular dependent yield simulated by C050000300033 MCNP C050000300034 (ERR-1) Beam current and target thickness normalizationC050000300035 (0.2%)C050000300036 (ERR-3) Yield reproducibility (6%)C050000300037 STATUS (COREL,C0500002) Data set from alpha-beam experiment C050000300038 ENDBIB 36 0 C050000300039 COMMON 2 3 C050000300040 ERR-1 ERR-3 C050000300041 PER-CENT PER-CENT C050000300042 0.2 6. C050000300043 ENDCOMMON 3 0 C050000300044 DATA 8 28 C050000300045 EN EN-ERR EN-RSL DATA -ERR-T +ERR-T C050000300046 -ERR-2 +ERR-2 C050000300047 MEV MEV MEV MB MB MB C050000300048 MB MB C050000300049 5.267 0.003 0.005 224.1 20.2 17.4C050000300050 15.1 11.1 C050000300051 5.288 0.003 0.005 247.8 23. 28.C050000300052 17.6 23.7 C050000300053 5.309 0.003 0.005 585.9 66. 55.8C050000300054 55.9 43.3 C050000300055 5.33 0.003 0.005 190.3 18.1 14.9C050000300056 14.1 9.6 C050000300057 5.351 0.003 0.005 229.9 25.9 24.2C050000300058 21.9 19.9 C050000300059 5.899 0.003 0.005 260.3 16.8 16.8C050000300060 6.3 6.3 C050000300061 5.905 0.003 0.005 205.7 14.3 14.3C050000300062 7.3 7.3 C050000300063 5.909 0.003 0.005 219.5 17.1 17.4C050000300064 11. 11.3 C050000300065 5.912 0.003 0.005 234.2 15.8 15.6C050000300066 7.2 6.7 C050000300067 5.915 0.003 0.005 230.7 16.5 16.3C050000300068 9. 8.6 C050000300069 5.918 0.003 0.005 230. 16.4 16.2C050000300070 8.8 8.5 C050000300071 5.921 0.003 0.005 244.7 16.2 16.2C050000300072 6.9 6.9 C050000300073 6.057 0.003 0.005 267. 18.3 18.6C050000300074 8.8 9.4 C050000300075 6.061 0.003 0.005 243.6 17.3 16.7C050000300076 9.2 8.2 C050000300077 6.066 0.003 0.005 239.6 16.5 16.5C050000300078 8. 8. C050000300079 6.068 0.003 0.005 253.3 16.4 16.4C050000300080 6.3 6.3 C050000300081 6.074 0.003 0.005 288.1 20.2 19.6C050000300082 10.4 9.2 C050000300083 6.078 0.003 0.005 258.6 17.8 17.2C050000300084 8.8 7.5 C050000300085 6.082 0.003 0.005 299.1 21.9 21.5C050000300086 12.6 11.8 C050000300087 6.089 0.003 0.005 341. 22.5 22.5C050000300088 9.3 9.3 C050000300089 6.5 0.003 0.005 269.6 18.3 18.3C050000300090 8.5 8.5 C050000300091 6.508 0.003 0.005 194.2 13. 13.C050000300092 5.7 5.7 C050000300093 6.516 0.003 0.005 303.2 22.6 22.6C050000300094 13.5 13.5 C050000300095 6.525 0.003 0.005 213.7 14.9 14.9C050000300096 7.7 7.7 C050000300097 6.533 0.003 0.005 380. 28.3 28.4C050000300098 16.8 16.9 C050000300099 6.542 0.003 0.005 246.6 18.1 17.9C050000300100 10.4 10.1 C050000300101 6.554 0.003 0.005 284.9 23.5 28.7C050000300102 16.1 23.1 C050000300103 6.567 0.003 0.005 270.1 19.8 21.7C050000300104 11.3 14.5 C050000300105 ENDDATA 60 0 C050000300106 ENDSUBENT 105 0 C050000399999 ENDENTRY 3 0 C050099999999